bilaterality vs bilateralism

bilaterality and bilateralism both are nouns.

Word	Noun	Adjective	Verb	Adverb
bilaterality	Yes	No	No	No
bilateralism	Yes	No	No	No

As nouns, bilaterality and bilateralism are synonyms defined as:

bilaterality and bilateralism: the property of being symmetrical about a vertical plane

Other synonyms of bilaterality include bilateral symmetry.

bilaterality (noun)	bilateralism (noun)
the property of being symmetrical about a vertical plane	the property of being symmetrical about a vertical plane